EDAC: Use kcalloc()

It is syntactic sugar anyway:

  # drivers/edac/edac_mc.o:

   text    data     bss     dec     hex filename
  13378     324       8   13710    358e edac_mc.o.before
  13378     324       8   13710    358e edac_mc.o.after

md5:
   70a53ee3ac7f867730e35c2be9110748  edac_mc.o.before.asm
   70a53ee3ac7f867730e35c2be9110748  edac_mc.o.after.asm

  # drivers/edac/edac_device.o:

   text    data     bss     dec     hex filename
   5704     120       4    5828    16c4 edac_device.o.before
   5704     120       4    5828    16c4 edac_device.o.after

md5:
   880563c859da6eb9aca85ec431fdbaeb  edac_device.o.before.asm
   880563c859da6eb9aca85ec431fdbaeb  edac_device.o.after.asm

No functional changes.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220412211957.28899-1-bp@alien8.de

drivers/edac/edac_device.c

@@ -70,26 +70,21 @@ edac_device_alloc_ctl_info(unsigned pvt_sz, char *dev_name, unsigned nr_instance
 	if (!dev_ctl)
 		return NULL;
 
-	dev_inst = kmalloc_array(nr_instances,
-				 sizeof(struct edac_device_instance),
-				 GFP_KERNEL | __GFP_ZERO);
+	dev_inst = kcalloc(nr_instances, sizeof(struct edac_device_instance), GFP_KERNEL);
 	if (!dev_inst)
 		goto free;
 
 	dev_ctl->instances = dev_inst;
 
-	dev_blk = kmalloc_array(nr_instances * nr_blocks,
-				sizeof(struct edac_device_block),
-				GFP_KERNEL | __GFP_ZERO);
+	dev_blk = kcalloc(nr_instances * nr_blocks, sizeof(struct edac_device_block), GFP_KERNEL);
 	if (!dev_blk)
 		goto free;
 
 	dev_ctl->blocks = dev_blk;
 
 	if (nr_attrib) {
-		dev_attrib = kmalloc_array(nr_attrib,
-					   sizeof(struct edac_dev_sysfs_block_attribute),
-					   GFP_KERNEL | __GFP_ZERO);
+		dev_attrib = kcalloc(nr_attrib, sizeof(struct edac_dev_sysfs_block_attribute),
+				     GFP_KERNEL);
 		if (!dev_attrib)
 			goto free;
 

drivers/edac/edac_mc.c

@@ -366,7 +366,7 @@ struct mem_ctl_info *edac_mc_alloc(unsigned int mc_num,
 	if (!mci)
 		return NULL;
 
-	mci->layers = kmalloc_array(n_layers, sizeof(struct edac_mc_layer), GFP_KERNEL | __GFP_ZERO);
+	mci->layers = kcalloc(n_layers, sizeof(struct edac_mc_layer), GFP_KERNEL);
 	if (!mci->layers)
 		goto error;